Home / 20,705,928.40-31,058,892.60-5,561,390.80

Finding the Fourth Proportional to 20,705,928.40, 31,058,892.60 and 5,561,390.80

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Solution

The fourth proportional to 20,705,928.40, 31,058,892.60 and 5,561,390.80 is: 8,342,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705,928.40 : 31,058,892.60 = 5,561,390.80 : x
  2. Step 2: Convert to fraction form
    20,705,928.40/31,058,892.60 = 5,561,390.80/x
  3. Step 3: Cross multiply
    20,705,928.40x = 31,058,892.60 × 5,561,390.80
  4. Step 4: Simplify right side
    20,705,928.40x = 172,730,639,563,828.09
  5. Step 5: Solve for x
    x = 172,730,639,563,828.09/20,705,928.40
  6. Step 6: Final answer
    x = 8,342,086.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.